PENGARUH PENYARINGAN KONVENSIONAL TERHADAP KUALITAS AIR SUMUR GALI DI DESA PULAU BERINGIN KECAMATAN PULAU BERINGIN KABUPATEN OKU SELATAN TAHUN 2025

Latar Belakang: Air sumur gali merupakan sumber utama air bersih masyarakat
Desa Pulau Beringin, namun di beberapa lokasi kualitas air belum memenuhi
standar karena berbau dan berwarna kekuningan, serta diduga mengandung zat besi
(Fe) dalam kadar tinggi.Tujuan: Penelitian ini bertujuan untuk mengetahui
pengaruh penyaringan konvensional menggunakan arang sekam padi terhadap
kualitas air sumur gali. Metode: Penelitian dilakukan dengan metode quasi
eksperimen menggunakan desain one group pre-post test. Sampel diambil dari
beberapa sumur warga, dan dilakukan penyaringan dengan ketebalan arang 10 cm,
15 cm, dan 20 cm. Hasil: Setelah penyaringan menunjukkan bahwa 2 dari 3 variasi
ketebalan berhasil menghilangkan bau dengan efisiensi rata-rata 66,67%. Warna air
tidak mengalami perubahan (efisiensi 0%). Nilai pH meningkat ke rentang normal
(efisiensi 100%) dengan hubungan kuat antara ketebalan arang dan pH (R = 0,89;
R2 = 0,80), namun tidak signifikan secara statistik (p = 0,102). Kadar Fe menurun
dari 0,22 mg/L (Ketebalan 10 cm), 0,1 mg/L (Ketebalan 15 cm), dan 0,09 mg/L
(Ketebalan 20 cm), dengan efisiensi rata-rata 79,11%. Uji regresi menunjukkan
hubungan sangat kuat antara ketebalan arang dan penurunan Fe (R = 0,97; R2 =
0,94;), dengan persamaan regresi: Fe = 0,734 – 0,039 × Ketebalan dengan nilai p =
0,016 yang signifikan secara statistik. Kesimpulan: Penyaringan konvensional
dengan arang sekam padi efektif meningkatkan kualitas air sumur gali pada
parameter bau, pH, dan kadar Fe, tetapi belum efektif terhadap warna. Diperlukan
penelitian lanjutan untuk optimasi ketebalan media saring.

Background: Dug well water is the primary source of clean water for the residents
of Pulau Beringin Village. However, in several locations, the water quality does not
meet the standard due to unpleasant odor, yellowish color, and suspected high levels
of iron (Fe). Objective: This study aims to determine the effect of conventional
filtration using rice husk charcoal on the quality of dug well water. Method: The
research used a quasi-experimental method with a one-group pre-post test design.
Samples were taken from several community wells and filtered using rice husk
charcoal with thicknesses of 10 cm, 15 cm, and 20 cm. Results: The results showed
that 2 out of 3 thickness variations successfully removed odor with an average
efficiency of 66.67%. The water color did not change (0% efficiency). The pH value
increased to the normal range (100% efficiency), with a strong correlation between
charcoal thickness and pH (R = 0.89; R2 = 0.80), although the relationship was not
statistically significant (p = 0.102). Iron concentration decreased from 0.22 mg/L
(10 cm), 0.10 mg/L (15 cm), to 0.09 mg/L (20 cm), with an average efficiency of
79.11%. Regression analysis showed a very strong correlation between charcoal
thickness and Fe reduction (R = 0.97; R2 = 0.94), with the regression equation: Fe
= 0.734 – 0.039 × Thickness, and a statistically significant p-value (p = 0.016).
Conclusion: Conventional filtration using rice husk charcoal effectively improves
dug well water quality in terms of odor, pH, and Fe levels, but is not yet effective
in improving water color. Further research is needed to optimize the filter media
thickness.